Spool or bobbin



H. D. CLINTON SPOOL OR BOBBIN July 28, 1936.

Filed June 24, 1935 Patented July 28, 1936 UNITED STATES PATENT SPOOL RBOBBlN Harry 1). Clinton, Johnson City, N. r Application June 24, 1935,Serial No. 28,186

Claims.

This invention relates to spools and bobbins, with reference moreparticularly to means of attaching heads to the ends of the barrels.

A primary purpose of the invention is to provide a spool or the like ofimproved construction, wherein the heads are positively and securelyaflixed to the barrel, and yet can be detached readily for renewal orchange if desired.

An important object is to provide a construction applicable especiallyto steaming bobbins or spools as used in the silk or rayon industrywhere repeated subjection to hot moisture is exceedingly destructive,but which is adaptable as well to warping, spinning, take-up and variousother kinds and types of spools used for diflerent purposes in textilemills.

Another principal aim is to provide a construction easy of assembly andsimple in embodiment, which will be strong and durable and can beproduced at a sufiiciently low cost of manufacture.

Other objects, in addition to the general concept and advantages, of theinvention, will be' rendered apparent and be best understood from thefollowing description with reference to the attached drawing,illustrating one practicable embodiment thereof in a silk spool orbobbin.

In said drawing:

Figure 1 is a partly sectional and partly plan view of the spool inlongitudinal or side elevation, with the parts at its lower end showndetached in their assembly relation;

Fig. 2 is an end view of the same as seen in complete assembly;

. Fig. 3 is a longitudinal perspective of the spool formed withgudgeon-receptive bearings at the ends; and

Fig. 4 is a like view of the spool formed with projecting gudgeons atthe ends.

The illustrative spool includes a barrel 5 of the usual cylindricalform, comprising a hollow shell body having straight ends in thisinstance. Said barrel, for ordinary purposes, may be composed of wood,metal, pyrex, or other suitable material, as preferred; but, for thepurpose of imperviability to steam, as herein proposed, it is composeddesirably of wood rendered warp-proof from moisture, bakelite, or metalwhich is rust and stain proof, such as so-called stainless steel. Inthis connection, it will be understood that the spool represented isdesigned especially for applicability of use as a steaming bobbin in thetreatment of silk and rayon, wherein the strand wound thereonto must beset in its twist by subjection to steam action which would bedestructive of the ordinary spool.

Within the barrel is positioned an axial memher 6, which in thisinstance comprises a metal rod extending through the barrel as a core.This axial member may be either tubular, so as to provide open gudgeonbearings So at the ends of the spool, as shown in Fig. 3, or it may besolid, so as to provide projecting gudgeon pieces 6b at the ends of thespool, as shown in Fig. 4. Said member is advantageously composed ofstainless steel to withstand the action of steam and eliminate thepossibility of imparting any discoloration to the thread or yarn woundonto the spool; however, an ordinary steel might equally well serve thepurpose, especially in a spool intended for ordinary use. The statedmember, in the form shown, is threaded at its ends, as represented at6c, preferably with a locking-thread for a reason which will bedescribed presently.

To the ends of the barrel, heads 1 are applied over the ends of theaxial member (6) just described, said heads being apertured centrallyfor the purpose with a sumcient clearance to admit another member, laterdescribed, therethrough. These heads are of fiat disc-like form and arecomposed preferably of stainless steel, to resist the action of steam,although bakelite or some other equally eiiective material may be usedif preferred. In construction for ordinary use, however, they mightcompose a vulcanized fiber, pyrex, or other desired material. In theform shown, the heads have central depressed portions la countersunkinto the bore of the barrel for snug and tighter fit thereon, andproviding a receptive space for said another member to be ad mittedthrough their central aperture. A washer or gasket 8 is advantageouslyinterposed between each head and the end of the barrel against which itbears.

to position and hold the aforesaid axial member in the center ofthebarrel, since the ends of said member extend centrally through the headsand are retained therebetween. It will be understood, of course, that ina spool or bobbin having only one head, the axial member might have someother means of positioning and retention within the headless end ofthe-barrel.

The head at each end of the barrel is attached The heads in thisinstance accordingly servefirmly thereagainst by a securing nut member9,

. extending through the and threaded in this instance internally, asrep-.

central aperture therein resented at 9a, to engage with the threaded endof the axial member. The threading of this nut member cooperatively withthe "lock-threading of said axial member, as before stated to bepreferred, provides a lock union of these two parts, so that they cannotdisengage or loosen after joinder by the screwing together, and yet maybe disengaged by unscrewing at will moval of the head for renewal orchange, and disassembly of the spool. Any kind of look-thread suitableto the purpose may be used and no particular form is claimed, a mereconventional thread of the character being represented in the drawing.Of course, an ordinary screw thread to allow reengagement between theparts may be used, if desired, although an actual locking together wouldnot then be attained without some auxiliary feature such as a feather orkey. Some other equivalent means of engaging the nut and axial memberstogether in locking relation could be employed, the essential purposebeing simply to insure against unintended separation after union, but alock-thread engagement between them is the most effectual for allpractical purposes. The threaded union, moreover, permits a tighteningto bind the head securely against the barrel end, and the two heads atopposite ends are, of course, drawn together on the axial member, sincethe threading at opposite ends of the latter is reversed.

The outer portion of the aforesaid nut member, in this instance formedas a lateral flange, seats upon the outer face of the head andpreferably within the depressed or countersunk portion (1a) thereof,fitting into the bore of the barrel, so as to lie fiush with the outersurface of said head. Keyholes 9b in its outer or flange portionadvantageously provide for the application of a wrench or other tool toscrew the same into place. In some instances it may be desirable tointerpose a washer l0 between this securing nut member and the head ofthe spool, such washer being of fiber or felt, or a metal lock washer,as preferred. However, it is not ordinarily necessary to use such awasher and it may be omitted except where it may be desired to cushionor frictionally hold the nut member.

When it is desired to remove the heads for any reason, such as renewingwhen worn, or changing to alter the weight of the spool, the securingnut member is simply unscrewed and withdrawn from the axial member,whereupon the head can be easily drawn off. Another head isas readilyapplied by the reverse procedure.

A spool of improved construction is thus provided, which is applicableto all kinds and types of articles of the kind. It is especiallyapplicable to steaming bobbins which are required to withstand thedisintegrating action of hot moisture without any corrosion, warping,loosening or coming apart, particularly under the strain against theheads, tending to press them off. It produces a very strong and durablespool of simple composition and assembly, that in addition can not breakeasily and will indefinitely endure the rough general usage to whichsuch articles are subjected in textile mills. Its novelty and advantageswill then be readily appreciated.

As it is obvious that various changes may be made in the details of formand arrangement of parts, with equivalences in feature, to fulfilldifferent requirements and purposes of the article, without departingfrom the aim and scope of the invention, the appended claims are notintended to limit the same to the specific construction illustrated anddescribed.

Having thus set forth my invention, what I claim as new and desire tosecure by Letters Patent of the United States, is:

1. A spool or bobbin comprising, a barrel, an axial core memberpositioned in the barrel, a head bearing against the end of the barreland having an offset central countersink portion fitting thereinto, anda securing nut-member extending centrally through the head into threadedengagement with the core and seating in the offset countersink portionof the head flush with the remaining outer surface thereof; saidsecuring member pressing the head tight against the barrel end andtogether with said core member being the sole means of locking the headto the barrel.

2. A spool or bobbin comprising, in combination, a hollow barrel, a coremember axially positioned with a surrounding space within the barrel, ahead bearing against the endof the barrel and having a central offsetcountersink portion fitting into the barrel end, and a securing nutmember extending centrally through the head into tightenable engagementwith the core member so as to press said head tightly in place andseating in the offset countersink portion of the head flush with theremaining outer surface of the same; said nut member and head togethercentering the core member in the barrel and said nut and core memberstogether locking the head removably to the barrel.

3. In a spool or bobbin. the combination of a hollow wooden barrel, ametal core member axially positioned in the barrel and having alockthreaded end, a flat head bearing against the end of the barrel andhaving a central ofiset countersink portion fitting into the barrelbore, a securing sleeve nut extending centrally through the head intocooperative engagement with the threaded end of the core member andhaving a flanged end seating fittably in the offset counter- 'ting intothe barrel end, and a securing nut member extending through the headinto threaded engagement with the core member and havi an overextendinglateral flange portion seating in the offset countersink portion of thehead flush with the remaining outer surface of the latter; said nutmember having means for turnmg it in engagement with the core member soas to draw and press the head tight against the end of the barrel andtogether with said core member being the sole means of fastening thehead to the barrel.

5. In a spool or bobbin, in combination with a barrel and heads appliedagainst the ends of the same, a metal core. member extending axiallythrough the barrel and having threaded ends, and securing nut membersextending centrally through the heads into threaded engagement with theends of said-core member; said nut members having lateral flangeportions overengaging and seating in central countersunk portions of theheads flush with the remaining surfaces of the same and drawing saidheads to hold them tight against the barrel ends when screwed into placeon the core member, and the countersunk portions of the heads beingformed by oi!- sets at one side fitting into the ends of the barrelhollowed to receive the same; said heads and nut members togethercentering the core memher in the barrel.

. HARRY D. CLINTON.

